SUSPENSION COUPLING (121 MODELS ONLY)
On all POLARIS snowmobile rear suspensions, there are two torque arms that
control the movement of the rail beam. Prior to the advent of suspension
coupling, these torque arms could move independently of each other. Rear
suspension coupling links the movement of the front and rear torque arms to
each other.
There are two types of rear suspension coupling.
FRONT TO REAR COUPLING AND THE FRONT REAR
SCISSOR STOP (FRSS)
The front rear scissor stop (FRSS) couples the movement of the front torque
arm with the rear torque arm and limits the amount of independence between
the movement of the front torque arm and the rear torque arm.
When hitting a bump, the front torque arm starts to compress. The FRSS links
the movement to the rear torque arm, causing it to compress and raise the rear
suspension up as one, allowing the suspension to hit the bump only once and
reducing kickback.
The factory setting is usually adequate for all riders and conditions.
REAR TO FRONT COUPLING AND THE REAR REAR
SCISSOR STOP (RRSS)
The rear rear scissor stop (RRSS) couples the movement of the rear torque arm
with the front torque arm and limits the amount of independent movement
between the rear torque and the front torque arm.
Adjusting the RRSS either allows more weight to transfer to the rear for more
traction, or allows less weight to transfer to the rear, resulting in improved
cornering performance. An adjustment dot is located on the RRSS. This dot is
on the longest end of the scissor stop.
REAR REAR SCISSOR STOP (RRSS) - ATTRIBUTES
Moving the RRSS to a higher position will have the following effects on the
suspension:
• Reduced weight transfer
• Improved chatter bump ride
• Improved cornering performance
• Increased load carrying capacity (2–up)
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